Malicious PDF — malware analysis report

Static analysis result for SHA-256 69044a9c4f6d00c8…

MALICIOUS

PDF

72.7 KB Created: 2021-09-02 19:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 111a4d8b9f07cbcbbbe3451f7e4ca6d0 SHA-1: 5204690addb3746ab71e442648169aeb3637ec01 SHA-256: 69044a9c4f6d00c8d1d756683958ef916095985f6e504b240c19fa0c596d60be
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other disposable hosting sites. These links are likely intended to lure users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://garglob.ru/uplcv?utm_term=bushnell+yardage+pro+1000+laser+rangefinder+manual PDF link annotation
    • http://www.serenissimaservizi.com//files/rematenikanerebo.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/49709565483.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160f5839851c06---77690787474.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/12b30d4219f25d0b461e65f773d09de9/94133904724.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/gusalifu.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/41364607575.pdfIn PDF document text
    • https://mauspro.net/upload/files/budogagofowatixigoseg.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/0f5b3a2691eda39794b5a539fff9afb5/vebak.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/018c35256959ec77901fdb9c9c71fa72/83834331914.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef8e94f806---xilasiveteved.pdfIn PDF document text
    • http://inimtrento.it/userfiles/files/futapubemigakesobiwexagan.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160726a3a87418---likudofaj.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/loxisafutupaxilipixeke.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cfa51af3628---menudekimolek.pdfIn PDF document text
    • http://polish-house.com/uploades/fckeditorfile/pesewusidanidusolapu.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6aecb482ac---pebaleloziwapazonitadaxeb.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/89427608973.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/pudeni.pdfIn PDF document text
    • http://megalabsrl.it/userfiles/files/98279771573.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/36613652881.pdfIn PDF document text
    • http://savitapiti.org/ckfinder/userfiles/files/wubab.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/t3ci2f7iujuhss24agsn70rq1r/43495126674.pdfIn PDF document text
    • http://apsara.ru/userfiles/file/bozokinabolagugofebi.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/3c75db5692fb9f06fefd59ebd251656c/givuxosiferu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB564 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cd7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7B 11288 bytes
SHA-256: 19700b3d10d3130dacadceb46a7be835a3b624fe6377bed4496b06de85ecb079
font_02_sfnt_off0000e79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79F 17072 bytes
SHA-256: 2d6c3b2bc39aab9cc5cab7ab7f21296491d506a41d7f622eec37ef9feb56d98a